San Diego  A woman was killed Wednesday morning in a two-vehicle crash in the South County after colliding with a truck being driven by a Border Patrol agent.

The accident was reported about 8:10 a.m. on Otay Lakes Road about one mile east of the Lower Otay Reservoir, said California Highway Patrol Officer Art Athans.

The woman was traveling east in a 1992 Nissan Maxima on the two-lane road when she drifted onto the right lane during a curve, lost control of the car and drove into oncoming traffic, Athans said.

Two on-duty Border Patrol agents were heading west in two marked Ford F-250 patrol vehicles, and the Maxima skidded sideways between the two and was broadsided on its passenger side by the second truck, Athans said.

The woman, who was from San Diego and believed to be in her 30s or 40s, died at the scene. The agent was taken to a hospital to be treated for minor injuries, Athans said.

Officers are investigating the circumstances of the crash. The road was wet but it was not raining at the time, Athans said. There is no evidence that alcohol was involved.

Otay Lakes Road was closed in both directions at Wueste Road to the west and state Route 94 for about 3-1/2 hours.

The woman’s name will not be released until her family can be notified.